﻿<div class="btn-group btn-group-media" role="group" aria-label="...">
    <button type="button" id="preBtn" class="btn btn-pre">
        <span></span>
    </button>
    <button type="button" class="btn btn-line"></button>
    <button type="button" id="playBtn" class="btn btn-play">
        <span></span>
    </button>
    <button type="button" class="btn btn-line"></button>
    <button type="button" id="nextBtn" class="btn btn-next">
        <span></span>
    </button>
</div>